DOT database reveals 75,000-plus bridges at or past useful life mark

Sources: American Road & Transportation Builders Association, Washington, D.C.; CP staff More than 222,000 U.S. bridges need major repair or are structurally deficient and warrant replacement, according to an American Road & Transportation Builders Association analysis of the recently released U.S. Department of Transportation 2023 National Bridge Inventory (NBI) database. Factoring average cost data states submit to the U.S. DOT,…

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FHWA data shows marked improvement in bridge conditions

Sources: Infrastructure Data Solutions, Regina, Saskatchewan; CP staff

Twenty-five years of sustained funding, plus advanced construction and engineering practices, have led to a steady improvement of the condition of U.S. bridges. Infrastructure Data Solutions’ (IDS) analysis of the Federal Highway Administration’s latest National Bridge Inventory data reveals a 12-point decline in the number of bridges deemed structurally deficient over a quarter century.

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FHWA: Laggards represent one-quarter of National Bridge Inventory

The latest Federal Highway Administration National Bridge Inventory (NBI) data show a total of 25 percent of the nation’s bridges 20 ft. or longer are either structurally deficient or functionally obsolete. Eleven percent of the 600,000-plus NBI crossings are structurally deficient, indicating significant deterioration of the deck, supports or other major components. Structurally deficient crossings may be posted for lower weight limits or closed if their condition warrants.

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